LS Industrial Systems iG5A - Bi-Annual Inspections

3. Maintenance
Inspection
method
Judgment
standard
Inspection
equipment
Inspection
method
Judgment standard
Inspection
equipment
Is there an error in
the display circuit
after the sequence
protection test?
Test the
inverter output
protection in
both short and
open circuit
conditions.
The circuit must
work according to
the sequence.
Cooling
system
Cooling fan
Are any of the fan
parts loose?
Check all
connected
parts and
tighten all
screws.
No abnormality
-
Display
Display
device
Is the display value
normal?
Check the
command
value on the
display device.
Specified and
managed values
must match.
Voltmeter,
Ammeter, etc.
3.1.3 Bi-annual Inspections
Inspection
method
Judgment
standard
Inspection
equipment
Inspection
method
Judgment standard
Inspection
equipment
Motor
Insulation
resistance
Megger test
(between the input,
output and earth
terminals).
Disconnect
the cables for
terminals U/V/
W and test the
wiring.
Must be above 5
MΩ
DC 500 V Megger
Caution
Do not run an insulation resistance test (Megger) on the control circuit as it may result in damage to the
product.